Description
Versions of OpenPubkey library prior to 0.10.0 contained a vulnerability that would allow a specially crafted JWS to bypass signature verification.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OPKSSH | OPKSSH | Openpubkey – ≤ 0.9.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | golang-github-openpubkey-openpubkey | 0.18.0-1 | — |
| Debian 13 | golang-github-openpubkey-openpubkey | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | golang-github-openpubkey-openpubkey | No fix yet | — |
| Ubuntu 26.04 LTS | golang-github-openpubkey-openpubkey | No fix yet | — |
| Ubuntu 25.10 | golang-github-openpubkey-openpubkey | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250515T200012-1.1 | openSUSE-SU-2025:15135-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/openpubkey/openpubkey | < 0.10.0 | 0.10.0 | GHSA-537f-gxgm-3jjq |
Advisories 1
- openSUSE-SU-2025:15135-1 govulncheck-vulndb-0.0.20250515T200012-1.1 on GA media SUSE / openSUSE Security Updates · Feb 5, 2026